Well-boring apparatus.



WELL BORING APPARATUS.

I. KITSEE.

hhhhhhhhhhhhhhh Patented Mar. 24, 1914.

UNITED srarns PATENT orrrcn.,

WELL-BORING APPARATUS.

Specification of Letters Patent.

Patented Mar. 24, 1914.

Application led August 25, 1908, Serial No. 450,126. Renewed August 22, 1913. Serial No. 786,181.

To all whom it may concern Be it known that I, lsmon Krrsnn, a citil 'zen of the United States, residing in the city of Philadelphia, county of Philadel` pliia,-and State of Pennsylvania, .have invented a new and useful lVeil-Boring Apparatus, of which the' following is a specili- Y' It is the object of my invention to provide 'apparatus for the purposes above mentioned and to this end, comprises a casing, cage, carrier or container carrying the earth or rock cutting instrument driven, fed, -or advanced by electric motors, in addition to means, such as an electric motor, for clampingor holding the casing or carrier in position during the earthl or rock cutting process.

My invention resides in other features hereinafter pointedv out and claimed.

For an illustration of one of `the forms my invention may take, reference is to be had to the accompanying drawing, in which? Figure '1 is a vertical sectional view through the casing orscage, some parts being shown inelevation. Fig. 2 isa horizontal section, some parts in elevation, on the line X--X, Fig. 1, through the earth and the casing showing the casing or cage clamping means.

A cable C supported and controlled by hoisting apparatus upon a derrick upon the surface of the earth supports at its lower end, by means of the eye bolt l and the attached arms 2, a casing, cage, container or carrier 3 formed, preferably, of sheet metal and cylindrical in form. Through a stuffing box 4 in the lower end wall 5 of the casing 3 extends a shaft 6, carrying at its lower end the rock or earth cutting instrument 7 Whose diameter determines the diameter of the hole or well bored through theearth or rock 8 within a hole or Well in Which'the casing 3 is shown. The shaft 6 passes through thev sleeve 9 having bearings at 10' and 11u Upon the sleeve 9 is mounted the rotor or armature 12 of an electric motor Whose field or stator is shown at 13 supported by the ring 14 which is, in turn, secured upon the inner Walls of the casing or cage 3. In the shaft C is a long key Way 15 in which engages the key 1G carried by the sleeve 9. Thus, asl the member 12 ,of the motor rotates it will rotate the cutting instrument 7 and still allow the shaft G to be fed longitudinally with respect to the driving member 12. The motor M, having'rotor 12 and stator 13 for driving the cutting instrument 7, may be of any suitable type such as a series, shunt, or com pound wound direc-t current motor or an alternating current `motor, and if such, is Apreferably an induction motor, which, as Well understood in the art, .requires electrical l20. of the second electric motor N, the field or stator 21 being carried bythe ring 22, which is also secured upon Lhe inner walls of the casing The mots- N may be of the same type as the motor M or may be of a different type. It may be an alternating current induction motor, and in such case, the winding of the rotor 2O is preferably of high resistance because such rotor is practically at standstill a great part of the time and 4at such standstill should exert great torque and not throw a heavy load upon the supply circuit. The torque exerted by the rotor 20 very slowly rotates the sleeveY 19 forcing the shaft 18, and consequently the shaft G downwardly, thus feeding the cutting vinstrument 7 forward as the earth .or

lrock is cut away. The shaft 18 carries at derstood that it may be at the surface of the earth at the derrick, and in either'case its ringing will advise the operator that the cutting instrument 7 has advanced to its limit.

Above the shaft 18 and secured to the insaid casin casing, a motor within said casing for driving said cutting instrument, means for fecding said cutting instrument, electro-magnetic means within said casing for operating said feeding means, means for clamping said casing in position, and-electro-magnetic means within said casing for operating said clamping means.

5. In well boring apparatus, the combination with a casing, of cutting apparatus carried thereby, an electric motor for driving said cutting apparatus, means for feeding said cutting apparatus, an electric motorv constantly exerting force upon said feeding means, means for clamping said casing in position, and electro-magnetic means for operating said clamping means.

6. In Well boring apparatus, the combination with a casing, of cutting apparatus carried thereby, means for clamping said casing in position, and an electric motor constantly exerting force upon said clamping means.

7. In Well boring apparatus, the combination with a casing, of cutting apparatus carriedthereby, an electric motor in said casing for driving said cutting-apparatus,

means for clamping said casing, an electric motor for controlling said clamping means, means for feeding said cutting apparatus, an electric motor for controlling said feeding means, and means for reversing all said motors.

In testimony whereof I have hereunto afiixed my signature in the presence of the two subscribing witnesses.

' ISIDOR KITSEE.

Witnesses: l

DANIEL WEBSTER, Jr., ANNA E. S'ramaocx. 

